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At 27^(@)C one mole of an ideal gas is compressed isothermally and reversibly from a pressure of 2 atm to 10 atm. The value of DeltaE and q are (R=2 cal)

Answer»

<P>0,-965.84 CAL
`-965.84 cal,-865.58cal`
`+865.58cal,-865.58cal`
`+965.84cal,+865.58cal`

Solution :Isothermally (at constant temperature) and reversible work.
`W=2.303" NRT LOG"(p_(2))/(p_(1))=2.303xx1xx300xx"log"(10)/(2)`
`=2.303xx600xxlog5=965.84`
At constant temperature, `DeltaE=0`
`DeltaE=q+W,q=-W=-965.84` cal


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